85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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#
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#
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# Copyright (C) 2006 Holger Hans Peter Freyther
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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What is a method pool?
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BitBake has a global method scope where .bb, .inc and .bbclass
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files can install methods. These methods are parsed from strings.
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To avoid recompiling and executing these string we introduce
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a method pool to do this task.
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This pool will be used to compile and execute the functions. It
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will be smart enough to
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"""
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from bb.utils import better_compile, better_exec
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from bb import error
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# A dict of modules we have handled
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# it is the number of .bbclasses + x in size
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_parsed_methods = { }
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_parsed_fns = { }
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def insert_method(modulename, code, fn):
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"""
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Add code of a module should be added. The methods
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will be simply added, no checking will be done
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"""
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comp = better_compile(code, "<bb>", fn )
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better_exec(comp, __builtins__, code, fn)
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# now some instrumentation
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code = comp.co_names
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for name in code:
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if name in ['None', 'False']:
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continue
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elif name in _parsed_fns and not _parsed_fns[name] == modulename:
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error( "Error Method already seen: %s in' %s' now in '%s'" % (name, _parsed_fns[name], modulename))
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else:
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_parsed_fns[name] = modulename
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def check_insert_method(modulename, code, fn):
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"""
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Add the code if it wasnt added before. The module
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name will be used for that
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Variables:
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@modulename a short name e.g. base.bbclass
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@code The actual python code
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@fn The filename from the outer file
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"""
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if not modulename in _parsed_methods:
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return insert_method(modulename, code, fn)
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_parsed_methods[modulename] = 1
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def parsed_module(modulename):
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"""
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Inform me file xyz was parsed
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"""
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return modulename in _parsed_methods
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def get_parsed_dict():
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"""
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shortcut
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"""
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return _parsed_methods
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